LTC4263IS - Negative Voltage Hot Swap Controller

The LTC4263IS from Linear Technology is a sophisticated negative voltage hot swap controller designed to enable safe board insertion and extraction from a live backplane. This specialized integrated circuit (IC) is tailored to manage the power supply during these critical moments, ensuring that the electronic components are protected from the potential damage caused by inrush currents and voltage spikes.

Key Features

• Wide Operating Voltage Range: The LTC4263IS operates over a broad input voltage range, accommodating systems that require negative voltages, typically in the range of -9V to -80V. This wide range makes it versatile for various applications.
• Adjustable Current Limit: Users can set the current limit threshold to match the requirements of their specific application, providing additional protection and control over the power-up sequence.
• Overcurrent Protection: The device includes an overcurrent protection feature that helps to prevent damage to the board and the power supply in the event of a circuit overload or short-circuit condition.
• High-Speed Circuit Breaker: The LTC4263IS features a fast-acting electronic circuit breaker that quickly disconnects the load from the power source if an overcurrent condition is detected, minimizing the risk of damage.
• Adjustable Overcurrent Auto-Retry Timer: After an overcurrent fault, the device provides an adjustable auto-retry timer that allows the system to attempt to power up again, which can be useful for clearing temporary faults.
• Power Good Output: A "power good" output signal is provided to indicate when the output voltage is within a nominal range, allowing other system components to safely start up.
• Thermal Shutdown: The LTC4263IS incorporates thermal shutdown protection to safeguard itself and the system it controls from overheating.

Applications

The LTC4263IS is ideal for a variety of applications that require hot swap capabilities with negative supply voltages. These include telecom and networking equipment, industrial systems, and server backplanes. Its robust feature set ensures that systems remain operational and protected even under adverse conditions.

Package and Reliability

Enclosed in a sturdy, thermally enhanced 16-lead SSOP package, the LTC4263IS is designed to withstand harsh industrial environments while maintaining a compact footprint. Linear Technology's reputation for reliability and performance is evident in this product, which is built to meet the high standards required by mission-critical systems.